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ylzik
Mar 10, 2009, 06:48 AM
how do I find the value of h in this equation:

v= (63.96 + 0.52h^2) h :confused::confused::confused:

thank youuuuuuuu! :)

Perito
Mar 10, 2009, 07:16 AM
If you multiply it out and subtract "v" from both sides, you have a cubic equation.

0.52 H^3 + 69.96h -v = 0

There is a general formula to find its roots (similar to the quadratic equation's solution, but more complicated). Here's a link on Wikipedia that might be useful.

Cubic function - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Cubic_equation)

Here is a calculator for solving cubics (and quadratics and quartics):

http://www.freewebs.com/brianjs/ultimateequationsolver.htm

Of course, you need to know the value of "v" to "solve" it with this solver.